Open AccessTm^3+-doped tellurite glasses for fiber amplifiers in broadband optical communication at 120 µm wavelength region
Author(s) -
Bo Zhou,
Hai Lin,
Edwin Yue-Bun Pun
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.018805
Subject(s) - materials science , wavelength , optics , thulium , optical amplifier , broadband , dopant , amplified spontaneous emission , fiber amplifier , optical fiber , doping , stimulated emission , zero dispersion wavelength , optoelectronics , amplifier , dispersion shifted fiber , fiber laser , fiber optic sensor , physics , laser , cmos
Broadband emissions at around 1.20 and 1.46 μm wavelengths from thulium (Tm(3+))-doped tellurite glasses were observed under 465 nm wavelength excitation. The 1.20 μm emission originates from the Tm(3+): (1)G(4)-->(3)H(4) transition, and the associated stimulated peak emission cross-section is calculated to be 0.47 × 10(-20) cm(2). Population inversion occurs between the (1)G(4) and (3)H(4) levels, and a positive gain band from 1.20 to 1.28 μm is achieved at relatively low Tm(3+) dopant concentration. Our results suggest that this glass system is promising for optical fiber amplifiers operating at the relatively unexplored low loss 1.20 μm wavelength region.